1 files changed, 33 insertions, 0 deletions
diff --git a/js/src/tests/non262/ShadowRealms/ccw.js b/js/src/tests/non262/ShadowRealms/ccw.js
new file mode 100644
index 0000000000..7596f15823
--- /dev/null
+++ b/js/src/tests/non262/ShadowRealms/ccw.js
@@ -0,0 +1,33 @@
+// |reftest| shell-option(--enable-shadow-realms) skip-if(!xulRuntime.shell)
+
+var g = newGlobal({ newCompartment: true });
+
+var sr = g.evaluate(`new ShadowRealm()`);
+
+
+// sr should be a CCW to a ShadowRealm.
+ShadowRealm.prototype.evaluate.call(sr, "var x = 10");
+assertEq(sr.evaluate("x"), 10);
+
+// wrappedf should *not* be a CCW, because we're using this realm's ShadowRealm.prototype.evaluate,
+// and so the active realm when invoking will be this current realm.
+//
+// However, the target function (wrappedf's f)  comes from another compartment, and will have to be a CCW.
+var wrappedf = ShadowRealm.prototype.evaluate.call(sr, "function f() { return 10; }; f");
+assertEq(wrappedf(), 10);
+
+var evaluate_from_other_realm = g.evaluate('ShadowRealm.prototype.evaluate');
+
+// wrappedb should be a CCW, since the callee of the .call comes from the other
+// compartment.
+var wrappedb = evaluate_from_other_realm.call(sr, "function b() { return 12; }; b");
+assertEq(wrappedb(), 12);
+
+nukeAllCCWs()
+// This throws, but the dead object message is lost and replaced with the wrapped function
+// object message.
+assertThrowsInstanceOf(() => wrappedf(), TypeError);
+assertThrowsInstanceOf(() => wrappedb(), TypeError);
+
+if (typeof reportCompare === 'function')
+    reportCompare(true, true);
+\ No newline at end of file